Damn Cat!!!

I have 2 12 week old pullet who free range all day in my fenced in yard..early last night my chickens were hanging with us on the patio and i spotted a cat by the coop..i was ENRAGED...i chased the cat away..safely put my girls in the coop and locked it up..i was nervous letting them out this morning...I never saw a cat in my yard in all the years i've been here..and we have a lot of neighrbors with cats wandering out front but never in my yard...The cat is small...is it possible that my girls can kick the cats butt...or should i do something to make sure the cat stays away...any suggestion???

I am in the process of trying to catch a big yellow tom cat that is eating my full grown hens. I can't leave my hens in the chicken yard because it's too far away from the house. So every morning I go get them and bring them up to the yard by the house and keep them close until we can manage to eliminate that cat. I had a fence go down in a storm and some dogs got in before we were able to get the fence back up and killed 5 of my hens. We fixed the fence but kept loosing hens in the middle of the day. My son finally saw the cat getting one of my hens and managed to save the hen but lost the opportunity to kill the cat, so now we are trying to trap it.

Didn't you know? Cats don't hurt chickens!
Those who keep repeating this are welcome to come view the corpses. All 30+ corpses.
The ONLY way I stopped the cats killing my chickens was to kill the cats.